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Added lvgl example
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@lewisxhe
lewisxhe committed Sep 2, 2024
1 parent a6fc5b9 commit f979f22
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267 changes: 267 additions & 0 deletions examples/lvgl_example/lvgl_example.ino
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#include <TFT_eSPI.h>
#include <lvgl.h>
#include <Arduino.h>
#define TOUCH_MODULES_GT911
#include "TouchLib.h"
#include "utilities.h"

static void slider_event_cb(lv_event_t *e);
static lv_obj_t *slider_label;

TouchLib touch = TouchLib(Wire, BOARD_I2C_SDA, BOARD_I2C_SCL, GT911_SLAVE_ADDRESS1);
TFT_eSPI tft;


// LilyGo T-Deck control backlight chip has 16 levels of adjustment range
// The adjustable range is 0~15, 0 is the minimum brightness, 15 is the maximum brightness
void setBrightness(uint8_t value)
{
static uint8_t level = 0;
static uint8_t steps = 16;
if (value == 0) {
digitalWrite(BOARD_BL_PIN, 0);
delay(3);
level = 0;
return;
}
if (level == 0) {
digitalWrite(BOARD_BL_PIN, 1);
level = steps;
delayMicroseconds(30);
}
int from = steps - level;
int to = steps - value;
int num = (steps + to - from) % steps;
for (int i = 0; i < num; i++) {
digitalWrite(BOARD_BL_PIN, 0);
digitalWrite(BOARD_BL_PIN, 1);
}
level = value;
}


// !!! LVGL !!!
// !!! LVGL !!!
// !!! LVGL !!!
static void disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
{
uint32_t w = ( area->x2 - area->x1 + 1 );
uint32_t h = ( area->y2 - area->y1 + 1 );
tft.startWrite();
tft.setAddrWindow( area->x1, area->y1, w, h );
tft.pushColors( ( uint16_t * )&color_p->full, w * h, false );
tft.endWrite();
lv_disp_flush_ready( disp );
}

static volatile bool touch_irq = false;

static bool getTouch(int16_t &x, int16_t &y)
{
uint8_t rotation = tft.getRotation();
if (!touch.read()) {
return false;
}
TP_Point t = touch.getPoint(0);
switch (rotation) {
case 1:
x = t.y;
y = tft.height() - t.x;
break;
case 2:
x = tft.width() - t.x;
y = tft.height() - t.y;
break;
case 3:
x = tft.width() - t.y;
y = t.x;
break;
case 0:
default:
x = t.x;
y = t.y;
}
Serial.printf("R:%d X:%d Y:%d\n", rotation, x, y);
return true;
}

/*Read the touchpad*/
static void touchpad_read( lv_indev_drv_t *indev_driver, lv_indev_data_t *data )
{
data->state = getTouch(data->point.x, data->point.y) ? LV_INDEV_STATE_PR : LV_INDEV_STATE_REL;
}


void setupLvgl()
{
#define LVGL_BUFFER_SIZE (TFT_WIDTH * TFT_HEIGHT * sizeof(lv_color_t))

static lv_disp_draw_buf_t draw_buf;
static lv_color_t *buf = (lv_color_t *)ps_malloc(LVGL_BUFFER_SIZE);
if (!buf) {
Serial.println("menory alloc failed!");
delay(5000);
assert(buf);
}
String LVGL_Arduino = "Hello Arduino! ";
LVGL_Arduino += String('V') + lv_version_major() + "." + lv_version_minor() + "." + lv_version_patch();
Serial.println( LVGL_Arduino );
Serial.println( "I am LVGL_Arduino" );

lv_init();

lv_group_set_default(lv_group_create());

lv_disp_draw_buf_init( &draw_buf, buf, NULL, LVGL_BUFFER_SIZE );

/*Initialize the display*/
static lv_disp_drv_t disp_drv;
lv_disp_drv_init( &disp_drv );

/*Change the following line to your display resolution*/
disp_drv.hor_res = TFT_HEIGHT;
disp_drv.ver_res = TFT_WIDTH;
disp_drv.flush_cb = disp_flush;
disp_drv.draw_buf = &draw_buf;
disp_drv.full_refresh = 1;
lv_disp_drv_register( &disp_drv );

/*Initialize the input device driver*/

/*Register a touchscreen input device*/
static lv_indev_drv_t indev_touchpad;
lv_indev_drv_init( &indev_touchpad );
indev_touchpad.type = LV_INDEV_TYPE_POINTER;
indev_touchpad.read_cb = touchpad_read;
lv_indev_drv_register( &indev_touchpad );
}

static void slider_event_cb(lv_event_t *e)
{
lv_obj_t *slider = lv_event_get_target(e);
char buf[8];
lv_snprintf(buf, sizeof(buf), "%d%%", (int)lv_slider_get_value(slider));
lv_label_set_text(slider_label, buf);
lv_obj_align_to(slider_label, slider, LV_ALIGN_OUT_BOTTOM_MID, 0, 10);
}

static void set_angle(void *obj, int32_t v)
{
lv_arc_set_value((lv_obj_t *)obj, v);
}


void setup()
{
Serial.begin(115200);

Serial.println("lvgl example");

//! The board peripheral power control pin needs to be set to HIGH when using the peripheral
pinMode(BOARD_POWERON, OUTPUT);
digitalWrite(BOARD_POWERON, HIGH);

//! Set CS on all SPI buses to high level during initialization
pinMode(BOARD_SDCARD_CS, OUTPUT);
pinMode(RADIO_CS_PIN, OUTPUT);
pinMode(BOARD_TFT_CS, OUTPUT);

digitalWrite(BOARD_SDCARD_CS, HIGH);
digitalWrite(RADIO_CS_PIN, HIGH);
digitalWrite(BOARD_TFT_CS, HIGH);

pinMode(BOARD_SPI_MISO, INPUT_PULLUP);
SPI.begin(BOARD_SPI_SCK, BOARD_SPI_MISO, BOARD_SPI_MOSI); //SD

pinMode(BOARD_BOOT_PIN, INPUT_PULLUP);
pinMode(BOARD_TBOX_G02, INPUT_PULLUP);
pinMode(BOARD_TBOX_G01, INPUT_PULLUP);
pinMode(BOARD_TBOX_G04, INPUT_PULLUP);
pinMode(BOARD_TBOX_G03, INPUT_PULLUP);

//Wakeup touch chip
pinMode(BOARD_TOUCH_INT, OUTPUT);
digitalWrite(BOARD_TOUCH_INT, HIGH);

Serial.print("Init display id:");
Serial.println(USER_SETUP_ID);

tft.begin();
tft.setRotation( 1 );
tft.fillScreen(TFT_BLACK);

// Set touch int input
pinMode(BOARD_TOUCH_INT, INPUT); delay(20);

touch.init();

setupLvgl();

lv_obj_t *tv = lv_tileview_create(lv_scr_act());

/*Tile1: just a label*/
lv_obj_t *tile1 = lv_tileview_add_tile(tv, 0, 0, LV_DIR_BOTTOM | LV_DIR_HOR);
lv_obj_t *label = lv_label_create(tile1);
lv_label_set_text(label, "Scroll down");
lv_obj_center(label);


/*Tile2: a slider*/
lv_obj_t *tile2 = lv_tileview_add_tile(tv, 0, 1, LV_DIR_TOP | LV_DIR_RIGHT);

/*Create a slider in the center of the display*/
lv_obj_t *slider = lv_slider_create(tile2);
lv_obj_center(slider);
lv_obj_add_event_cb(slider, slider_event_cb, LV_EVENT_VALUE_CHANGED, NULL);
/*Create a label below the slider*/
slider_label = lv_label_create(tile2);
lv_label_set_text(slider_label, "0%");
lv_obj_align_to(slider_label, slider, LV_ALIGN_OUT_BOTTOM_MID, 0, 10);

/*Tile3: a list*/
lv_obj_t *tile3 = lv_tileview_add_tile(tv, 1, 1, LV_DIR_LEFT);
lv_obj_t *list = lv_list_create(tile3);
lv_obj_set_size(list, LV_PCT(100), LV_PCT(100));

lv_list_add_btn(list, NULL, "One");
lv_list_add_btn(list, NULL, "Two");
lv_list_add_btn(list, NULL, "Three");
lv_list_add_btn(list, NULL, "Four");
lv_list_add_btn(list, NULL, "Five");
lv_list_add_btn(list, NULL, "Six");
lv_list_add_btn(list, NULL, "Seven");
lv_list_add_btn(list, NULL, "Eight");
lv_list_add_btn(list, NULL, "Nine");
lv_list_add_btn(list, NULL, "Ten");

/*Tile4: a arc*/
lv_obj_t *tile4 = lv_tileview_add_tile(tv, 1, 0, LV_DIR_HOR);

/*Create an Arc*/
lv_obj_t *arc = lv_arc_create(tile4);
lv_arc_set_rotation(arc, 270);
lv_arc_set_bg_angles(arc, 0, 360);
lv_obj_remove_style(arc, NULL, LV_PART_KNOB); /*Be sure the knob is not displayed*/
lv_obj_clear_flag(arc, LV_OBJ_FLAG_CLICKABLE); /*To not allow adjusting by click*/
lv_obj_center(arc);

lv_anim_t a;
lv_anim_init(&a);
lv_anim_set_var(&a, arc);
lv_anim_set_exec_cb(&a, set_angle);
lv_anim_set_time(&a, 1000);
lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE); /*Just for the demo*/
lv_anim_set_repeat_delay(&a, 500);
lv_anim_set_values(&a, 0, 100);
lv_anim_start(&a);

// Adjust backlight
pinMode(BOARD_BL_PIN, OUTPUT);
setBrightness(16);
}

void loop()
{
lv_timer_handler();
delay(5);
}
55 changes: 55 additions & 0 deletions examples/lvgl_example/utilities.h
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/**
* @file utilities.h
* @author Lewis He ([email protected])
* @license MIT
* @copyright Copyright (c) 2023 Shenzhen Xin Yuan Electronic Technology Co., Ltd
* @date 2023-04-11
*
*/
#pragma once



//! The board peripheral power control pin needs to be set to HIGH when using the peripheral
#define BOARD_POWERON 10

#define BOARD_I2S_WS 5
#define BOARD_I2S_BCK 7
#define BOARD_I2S_DOUT 6

#define BOARD_I2C_SDA 18
#define BOARD_I2C_SCL 8

#define BOARD_BAT_ADC 4

#define BOARD_TOUCH_INT 16
#define BOARD_KEYBOARD_INT 46

#define BOARD_SDCARD_CS 39
#define BOARD_TFT_CS 12
#define RADIO_CS_PIN 9

#define BOARD_TFT_DC 11
#define BOARD_TFT_BACKLIGHT 42

#define BOARD_SPI_MOSI 41
#define BOARD_SPI_MISO 38
#define BOARD_SPI_SCK 40

#define BOARD_TBOX_G02 2
#define BOARD_TBOX_G01 3
#define BOARD_TBOX_G04 1
#define BOARD_TBOX_G03 15

#define BOARD_ES7210_MCLK 48
#define BOARD_ES7210_LRCK 21
#define BOARD_ES7210_SCK 47
#define BOARD_ES7210_DIN 14

#define RADIO_BUSY_PIN 13
#define RADIO_RST_PIN 17
#define RADIO_DIO1_PIN 45

#define BOARD_BOOT_PIN 0

#define BOARD_BL_PIN 42

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